Configuring Hardware Multicast Packet Replication

To configure hardware multicast packet replication:

1. Configure port 8 on a high-density Ethernet module to accept redirected egress multicast traffic.
   1. Specify the Gigabit Ethernet interface on port 8.
   2. Create a VLAN major interface.
   3. Create a VLAN subinterface.
   4. Assign a VLAN ID.
   5. Configure an unnumbered IP interface.
   6. Enable IGMP on the interface with only multicast-data-forwarding capability.

      host1(config)#interface gigabitEthernet 2/8

      host1(config-if)#encapsulation vlan

      host1(config-if)#interface gigabitEthernet 2/8.1

      host1(config-if)#vlan id 1

      host1(config-if)#ip unnumbered loopback 0

      host1(config-if)#ip igmp version passive

2. Configure an IP interface to redirect egress multicast traffic to port 8.
   1. Create a VLAN subinterface.
   2. Assign a VLAN ID.
   3. Assign an IP address.
   4. Configure the interface to redirect egress multicast traffic to port 8.

      host1(config)#interface gigabitEthernet 2/0.101

      host1(config-if)#vlan id 1

      host1(config-if)#ip address 10.1.1.1 255.255.255.0

      host1(config-if)#ip multicast ioa-packet-replication gigabitEthernet 2/8.1

encapsulation vlan

• Use to configure VLAN as the encapsulation method for the interface.
• Example

  host1(config-if)#encapsulation vlan

• Use the no version to disable VLAN on an interface.
• See encapsulation vlan.

ip igmp version

• Use to set the IGMP version (1, 2, or 3) for the interface or specify a passive interface with only multicast-data-forwarding capability (passive).
• Example

  host1:boston(config-if)#ip igmp version passive

• Use the no version to set the version to the default, IGMPv2.
• See ip igmp version.

ip multicast ioa-packet-replication

• Use to configure hardware multicast packet replication on port 8 of a high-density Ethernet module.
• Example

  host1(config-if)#ip multicast ioa-packet-replication gigabitEthernet 3/8.1

• Use the no version to disable hardware multicast packet replication.
• See ip multicast ioa-packet-replication.

ip unnumbered

• Use to configure an unnumbered IP interface.
• This command enables IP processing on an interface without assigning an explicit IP address to the interface.
• You must specify an interface location, which is the identifier of another interface on which the router has an assigned IP address. This interface cannot be another unnumbered interface.
• Example

  host1(config-if)#ip unnumbered loopback 10

• Use the no version to disable IP processing on the interface.
• See ip unnumbered.

Copyright © 2008, Juniper Networks, Inc. All rights reserved. Trademark Notice.